Did you mix up the soil yourself or buy it? I’m thinking organic super soil is the direction I want to go for my next round, but not sure whether I want to mix up soil myself or buy something like m3 Michigan mix.
I purchased it and slightly amended it. It’s Kind Soil base (I don’t have the space, time, or required privacy nor the need for a huge enough amount to make it myself at this point). Kind states that it is water only, with no need to amend. However, I’ve found that the pH is just a bit on the higher side (8.3 or so from my slurry). There is also no mag sulfate in the mixture. That said, I’ve added in some epsom (just a bit, over time) and maybe a half tbs of elemental sulfur/gypsum to slowly bring pH down a bit. I did the “layer” technique. My base medium is Roots Organic (which had a pH of 6.5 per slurry and seems to be FANTASTIC soil).
I also pasteurize all of my soil before taking it into my tent (wrote about my process and rationale a few pages back). That said, I didn’t see any bugs or contaminants in the Kind or the Roots while preparing my medium, but I am just a little obsessive about pest prevention and cleanliness now, especially with any soil-based media.
Speaking of that... my girls got watered for the first time in several days yesterday, and then foliar sprayed with Azamax/Castille soap mixture at 6.6 pH last night right before lights out, and my god they liked all of it! She’s already sucked half the damn water out of the medium since yesterday, which is astounding. For the record, she is about at the end of her 3rd week from seed.
I also have plants in coco coir, including another BBnC. Don’t know if it’s the medium or different pheno, but she has a lot more space between nodes and is also growing rapidly. Good genetics from Useful here. Let me know if you want any more info about the SS mix, jdoorn.